discussion: <A HREF="http://www.dms.umontreal.ca/~andrew/PDF/Equidist1.pdf">Limitations to the equidistribution of primes</A> (Friedlander and Granville, 1989).

the source to Montgomery is

*Topics in multiplicative number theory* (Springer, 1971)

Proc. Symp. Pure Math. **28**, 307 (1976)